3629146821 has 4 divisors (see below), whose sum is σ = 4838862432. Its totient is φ = 2419431212.

The previous prime is 3629146819. The next prime is 3629146867. The reversal of 3629146821 is 1286419263.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3629146821 - 2¹ = 3629146819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3629146811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604857801 + ... + 604857806.

It is an arithmetic number, because the mean of its divisors is an integer number (1209715608).

Almost surely, 2^3629146821 is an apocalyptic number.

It is an amenable number.

3629146821 is a deficient number, since it is larger than the sum of its proper divisors (1209715611).

3629146821 is a wasteful number, since it uses less digits than its factorization.

3629146821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209715610.

The product of its digits is 124416, while the sum is 42.

The square root of 3629146821 is about 60242.4005248795. The cubic root of 3629146821 is about 1536.7439527467.

The spelling of 3629146821 in words is "three billion, six hundred twenty-nine million, one hundred forty-six thousand, eight hundred twenty-one".